Giraud-Héraud, Eric; Hammoudi, Hakim; Mokrane, Mahdi - In: Canadian Journal of Economics 36 (2003) 1, pp. 41-61
In this paper we offer a generalization of the circular model of product differentiation by introducing a multiproduct firm facing monoproduct competitors. We prove existence and explicitly characterize equilibrium when transportation costs are quadratic. We exhibit interesting equilibrium...